1221013220301 has 64 divisors (see below), whose sum is σ = 2111156544000. Its totient is φ = 697178664000.

The previous prime is 1221013220279. The next prime is 1221013220311. The reversal of 1221013220301 is 1030223101221.

1221013220301 is a `hidden beast` number, since 1 + 2 + 210 + 132 + 20 + 301 = 666.

It is not a de Polignac number, because 1221013220301 - 2⁵ = 1221013220269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221013220311) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11997891 + ... + 12099231.

It is an arithmetic number, because the mean of its divisors is an integer number (32986821000).

Almost surely, 2^{1221013220301} is an apocalyptic number.

It is an amenable number.

1221013220301 is a deficient number, since it is larger than the sum of its proper divisors (890143323699).

1221013220301 is a wasteful number, since it uses less digits than its factorization.

1221013220301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102672 (or 102652 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1221013220301 its reverse (1030223101221), we get a palindrome (2251236321522).

The spelling of 1221013220301 in words is "one trillion, two hundred twenty-one billion, thirteen million, two hundred twenty thousand, three hundred one".